The Rare Rheumatologic Diseases Special Report is a supplement to Rheumatology News, providing readers with information about how registries for rare pediatric diseases such as polyarticular juvenile idiopathic arthritis, scleroderma, and myositis, have led to important insights into treatments and disease characteristics. The issue also discusses updated recommendations on the management of large-vessel vasculitis from the European League Against Rheumatism and recent efforts to establish classification criteria for chronic nonbacterial osteomyelitis/chronic recurrent multifocal osteomyelitis.
